Step 3: Hide the Joints

As an extra detail, nail Masonite strips over the joints to hide them (Image 1). Once the entire front of the unit is covered with Masonite strips, use some wood putty to fill in any cracks, spaces or nail holes.

Use a router with a bearing bit (Image 2) to cut excess material from the Masonite. Set the depth of the bit to just clear the Masonite. The bearing will ride along the material to make a clean cut.